Motor-cycle drive mechanism.



W. G. SOHAEFFER.

MOTOR CYCLE DRIVE MECHANISM.

APPLICATION FILED DEC. 6, 1907.

Patented Aug. 2, 1910.

I izizw SVHJQMFOQ Witnesses Quanta UNITED STATES PATENT ()FFICE.

WILLIAM G. SCI-IAEFFER, OF READING, PENNSYLITANIA, ASSIGNOR; TO READINGSTANDARD COMPANY, 01 READING, PENNSYLVANIA, A CORPORATION OF PENN-sxnvanm.

MOTOR-CYCLE DRIVE MECHANISM.

Specification of Letters Patent.

Patented Aug. 2, 1910.

Application filed December 6, 1907. Serial No. 405,346.

To all whom it may concern: I

Be it known that I, WILLIAM G. SGHAEfF- FER, a citizen of the UnitedStates, and a resident of the city of Reading, in the county ,of Berksand State of Pennsylvania, have invented certainnew and useful Improveofthe drive-gear chamber being removed,.

and a portion of the countershaft gear-wheel broken away to show thesprocket wheel on .the inner side of said chamber. Fig. 2 is across-sectional plan view on the line 2-2 of Fig. 1. I

a a represent a portion of a cycle frame I which is provided with apedal-shaft hanger or bearing 12 for the pedal shaft 0, said pedal shaftbeing providedas usual with-a sprocket wheel 2% for the and being showneccentrically mounted to provide for adjustment of said chain.

cl represents a portion of an ordinary n10- tor, and e'e the usual crankcasing inclosing the motor shaft fand fly wheel g; said casingbeingrigidly secured to the cycle frame a in any preferred manner, asindicated at 7a As shown the motor is located forward of the edal shaft0, and the motor drive is effected through a countershaft 'z' providedwith a sprocket j having a drive chain 70 extending to the rear wheel ofthe cycle astride the pedal shaft bearing 6.

In my improved construction the motor countershaft z is mountedindependently of the cycle frame in abearing m formed atthe periphery,of the motor crank casing e.

The countershaft is rovided at its outer end with'a gear whee n which isdriven by a dpinion p on the motor shaft, through-an i or wheel a, andthese gears p, q, n, are inclosed in a. riveer chamber? formed on theouter face 6 the crank-casing e. This edal drive chain chamber is formedby an outwardly (projecting flange r on the casing, adapte to receive acover plate a, and it extends at r beyond the periphery of the casing e,in 'front of the casing bearing m,'to inclose the gear n, said extension1' as shown being provided with a removable inner-Wall section 1' for apurpose hereafter described, The

idler gear 9 1s mounted upon a stud bearing 9 projecting from the faceof'the casing 6 within the chamber 7' as indicated. The

countershaft bearing lug m m as shown is formed with annular rollerbearing pockets 8 s for the countershaft i, and the latter is formedwith a cupped collar to which the sprocket wheel 7' is fixed and whichshoulders against the gear wheel a and encircles theend portion m of thecasing bearing lug m. The removable inner-wall section 7 of the drivegear casing enables this countershaft, with the sprocket wheel j fixedthereto,

to be readily placed in position in the easing bearingm m as shown; thewall-section 7* being thereafter secured in pl ace, the gear wheel atfixed to'the projecting end of the countershaft within the extendedchamber 1', and the cover plate '1' finally put on to form a closedgear-chamber which maybe lubrication ofthe at I claim is 1. In a motorcycle a motor crank-casing secured to the cycle frame and provided with,a peripheral lug forming a countershaft bearing, and with a drive-gearchamher on the outer face of the casing, said chamber extending beyondthe periphery of the casing and being-provided with a removable innerwall section concentric with said casing bearing, and a countershaftmounted tor parts.

in said casing bearing and provided with an inner sprocket wheel locatedadjacent said remova lewall'and with a gear wheel located within'saidchamber, said countershaft gear wheel being in gear withthe motor shaft,substantiallyas set forth. f

2: In a motor cycle providedwith'a pedalshaft bearing, a motorcrank-casing secured t,'o the cycle frame forward of said pedal shaftbearing and havin an integrally formed eripheral counters aft bearinglo-.

cated a jacent said pedal shaft bearing, a countershaft mounted in saidcasing bearing and provided with an outer gearwheelarpartially filledwith oil to. insure satisfacranged in gear with the motor shaft and Intestimony whereof, I afiix my signawith en inner1 sproclket1 wheel, adrivedchaliln ture, in the presence of two Witnesses.

on sand sproc (et W 1ee running astri e t e pedal-shaft bearing, and adrive-gear cham- SOHAEFFER 'ber formed on said casing and extendingWitnesses:

rearward so as to overlap the pedal shaft D. M. STEWART,

bearing substantially as set forth. W. G. STEWART.

